American Flyer Locomotive 3745 GP-7 Twin Unit Diesel
This is a complete history, pictures, descriptions, and information on the American Flyer Locomotive 374 375 GP-7 Twin Unit Diesel. The 374 375 was a GP7 Diesel Model. The engine had a worm drive motor and built-in air horn. The Locomotive 3745 was made from 1953 to 1955. American Flyer had three basic types of diesel trucks. Diesel naming convention moved away from the steam Whyte system and focused on Axels instead of wheels. GP7 trucks with two powered axles, PA/PB trucks with simulated three powered axles (also used on the EP-5 Electric style locomotive) and the Baldwin diesel trucks had two powered axles. The F9 may have simply used the Baldwin trucks. This would make the GP7 locomotives B-B type, the PA/PB and electric locomotives C-C type and the Baldwins, B-B type also. F9’s probably B-B as well.
American Flyer Made about eight other models of GP7 Diesel Engines.
- 370 GM
- 371 GM
- 372 UP
- 375 GM
- 374/375 T&P 
- 377/378 T&P 
- 21831 T&P
- (21)234 Chesapeake and Ohio
American Flyer Sets Including Locomotive 374 375 Sights like this, two workhorse General Motors GP-7 Diesel switcher locomotives teamed up at the business end of a freight drag. are becoming more and more common in real-life railroading. Now American Flyer introduces it to model pike fans — in two unit locomotive with authentic Texas & Pacific R.R. orange-and-black colors plus 6 scale model heights, featuring the new 3-dome Gulf Tank Car and Remarkable Action Caboose. New accurate tone Diesel horn blows by remote control. Also by remote control all cars uncouple and train starts. stops and reverses. Set measures 5 ft., 9 1/2 in. long. Track is 160” long.
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